mariner spark problem,100 hp

edsplacecars

Recruit
Joined
May 7, 2005
Messages
3
I have a 1992 Mariner 100 HP that I just replaced the switch box and plugs because #2 cylinder was loosing spark when cold.It ran great for about 35 minutes then died out on me when i got back to the dock I got it going but now it wont idle and two bottom cylinders are arcing spark right through the spark plug boot and there is no change in engine when they are shorted with test light.
 

Bob H.

Petty Officer 2nd Class
Joined
May 4, 2005
Messages
113
Re: mariner spark problem,100 hp

If I'm understanding correctly you've answered your own question. Start by replacing the spark plug wires and see what changes.
 
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